【Java例题】1.2计算n的m次方

 1 package study;
 2 import java.util.*;
 3 import java.math.*;
 4 
 5 public class study {
 6     public static void main(String[] args){
 7         System.out.println("输入一个n");
 8         Scanner in=new Scanner(System.in);
 9         String a=in.next();
10         BigInteger n=new BigInteger(a);
11         System.out.println("输入一个m");
12         String b=in.next();
13         BigInteger m=new BigInteger(b);
14         BigInteger ans=new BigInteger("1");
15         BigInteger i=new BigInteger("0");
16         BigInteger d=new BigInteger("1");
17         for(;i.compareTo(m)<0;i.add(d)){
18             ans=ans.multiply(n);
19         }
20         System.out.println(ans);
21     }
22 }